Isp blacklist feed

A system for providing a notification containing an ISP from which DDoS attacks originate, the system comprising:

• at least one processor communicably coupled to a memory, wherein the memory is operable to store instructions for execution by the at least one processor, the at least one processor operable to execute the instructions to perform the steps of:
• receiving an indication that one or more network resources are being targeted as part of one or more DDoS attacks;
• obtaining one or more malicious IP addresses corresponding to devices that transceive data with the one or more network resources as part of the one or more DDoS attacks;
• sending a request to a database system to determine an Internet Service Provider (ISP) associated with each of the one or more malicious IP addresses;
• computing a metric associated with a first ISP involved in the one or more DDoS attacks, wherein the metric includes at least one of:
• a first amount of malicious IP addresses of the first ISP and a second amount of malicious requests from the malicious IP addresses of the first ISP;
• comparing the metric to a threshold;
• and
• when the metric exceeds the threshold, sending, to a list of subscribers, an alert message indicating that the first ISP is involved in the one or more DDoS attacks.